科目: 来源:不详 题型:单选题
| A.has been polluted | B.were polluted |
| C.is polluted | D.was polluted |
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科目: 来源:不详 题型:阅读理解
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科目: 来源:不详 题型:单选题
| A.has won | B.have gained | C.has beaten | D.have defeated |
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科目: 来源:不详 题型:单选题
| A.were | B.are | C.was | D.is |
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科目: 来源:不详 题型:单选题
| A.were affected |
| B.was affected? |
| C.had affected |
| D.has affected |
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科目: 来源:不详 题型:单选题
| A.is; is | B.are; is | C.are; are | D.is; are |
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科目: 来源:不详 题型:单选题
| A.is not |
| B.is getting? |
| C.are getting |
| D.am getting |
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